Veterinary Medical Center, The Ohio State University, Columbus, OH (R.B.); Veterinary Specialist Services PC, Conifer, CO (K.G.); Department of Small Animal Clinical Sciences, University of Tennessee College of Veterinary Medicine, Knoxville, TN (R.H.); Southwest Veterinary Anesthesiology, Southern Arizona Veterinary Specialists, Tucson, AZ (V.L.); Phoenix, AZ (W.S.P.); Front Range Veterinary Clinic, Lakewood, CO (B.S.); and Peak Performance Veterinary Group, Colorado Springs, CO (K.S.) (At 2011-11-01)